Travelling controlling apparatus for underground mineworks or the like



June 21,1955

K. HENKEL 2,711,305 TRAVELLING CONTROLLING APPARATUS FOR UNDERGROUNDMINEWORKS OR THE LIKE Filed Jan. 24, 1951 s Sheets-Sheet 1 Inventor W QwMW June 21, 1955 HENKEL 2,711,305

TRAVELLING CONTROLLING APPARATUS FOR UNDERGROUND MINEWORKS OR THE LIKEFiled Jan. 24, 1951 3 Sheets-Sheet 2 lnvenfor' by MW guy/MW June 21,1955 K. HENKEL 2,711,305

TRAVELLING CONTROLLING APPARATUS FOR UNDERGROUND MINEWORKS OR THE LIKE vFiled Jan. 24, 1951 v 3 Sheets-Sheet 3 In yen for Aflorngys by I itSiafis TRAVELLENG CQNTROLLING APPARATUS FOR. UNDERGRDUND MINEWORKS ORTHE LIKE Karl Henkel, Sprockhovel, Germany Application January 24, 1951,Serial No. 207,550 Claims priority, application Germany February 14,1949 8 Claims. (Cl. 255-51) atent releasing check members or" the like.

the holes, even in rock, by means of a drilling machine with rotarydrills. Experiments in this direction are proceeding with promisingresults.

The invention solves the problem of developing a transportable devicefor producing drill holes in underground mineworks or the like, which isso constructed that the holes can be made in any desired position anddirection of drilling more easily than with the hitherto known devices.

An essential characteristic of the subject of the invention consists inthat on a transportable, preferably travelling frame there are arrangedone or more arms which pivot about a common axis and Whose length isvariable, each carrying at their outer end a pivotally arranged drillingdevice which can operate obliquely or parallel to the pivotal axis ofthe carrying arm.

Preferably the invention'employs a shaft or link pin arranged fast onthe frame and on which the arms carrying the drilling tools arepivotally mounted, for example by means of suitable bearing bushings.

The movement of the arms carrying the drilling tools is effectedaccording to the invention by self-checking worm gearing which may beoperated by hand or, preferably, by motor. I

A further essential characteristic of the drilling device according tothe invention is the arrangement on the frame of a piston actuated bypressure medium and which is arranged to clamp the device betweenceiling and floor of the drift or tunnel. For this purpose the pressurepiston is connected with a piston rod which carries a shoe or the likeacting against the roof of the drift.

There may further be provided on the frame, according to the invention,preferably on the fixed pin or shaft on which are carried the carryingarms, an extension, directed against the end of the drift or the breastof the tunnel, by means of which the device can be supported on the endor the breast.

The carrying arm of the device according to the invention preferablyconsists of a main part, which is pivotal and possibly longitudinallymovable to the pivotal axis, and a beam, mounted so as to be movablelongitudinally thereon, whose end carries the drilling tool. In order tomove this beam the invention preferably employs a self checking gearingwhich acts on a rack provided on the beam. Moreover it may beadvantageous, for rapid movement of the beam to provide a pressuremedium piston which may for example be actuated by compressed air. a

The drilling tool is, according to the invention preferably arranged intwo axles which can pivot on the carrying arm or its beam. In this waythe pivotal mounting of the drilling tool may for example be pro:

2 vided with an automatic checking, for example in the form of afriction brake which holds the tool during the drilling operationbutwhich permits its movement with a somewhat larger expenditure offorce but Without Thewhole drilling device is preferably arranged on atravelling frame with a motor drive for'travelling. The running wheelsfor the travelling frame are preferably arranged in special rotaryframes which for theirpart pivot about a vertical axis andan axisextending transversely to the direction of travel, thus facilitating theplacing of thedevice on'the rails or turning thereon.

As a drilling tool the invention preferably employs a.

machine working with rotary drilling, the driving motor thereforbeingarranged movably with the drill'in a guide frame which isitselfmovably carried'on the carrying arm. Moreover, according to a furtherimportant characteristic of the invention the driving motor of the drilland'the advancing motor are preferably arranged at different ends of theguiding frame, the pivot point being in a middlepart of the frame. Inthis Way there is provided an advantageous equalisation of weight andthe drilling tool can be more easily actuated. In addition thisarrangement gives the advantage that the advancing spindle which ispreferably made hollow, is only given tensional stress and notcompressive stress on pressing the drill against the end. 1

The drilling device according to the invention provides thepossibilityof drilling holes in any desired position and directionwithin the range of the carrier arm. During drilling the subject of theinvention is clamped fast with the rock in which the main axle or thelike holding the rearward end of the carrying arm and the drilling toolis fixed by the said clamping column. As soon as the position of themain axle of .the apparatus according to the invention is secured byclamping against the end and between the roof and the floor the carryingarm can be .swung into the correct position by means of worm gearing andregulated in its length to the extent desired by longitudinal movementin the guiding housing by means. of a crank and rack.

The. drawing shows one form of construction of the invention in which: I

Fig. '1 is a front elevation of the apparatus,

Fig. 2 is a side elevation,

Fig. 3 is a plan,

Fig. 4 is a section on the line IVIV of Fig. 3 through i a part of theapparatus,

Fig. 5 shows, to a larger scale, a plan of the pivoting the apparatusmay be easily pushed on to the track 3 or, I

for example, from the track 3 on to the track formed by the rails 6 and3. v e

On the frame 1 there are secured two-struts 7, 8 which carry a fixedshaft 9 which is connected at'10 with a column 11.. in the column 11there is provided a piston 12, actuated by a pressure medium, forexample, compressed air, and whose piston rod 13 extendsv upwards fromthe housing and carries a shoe 14 which in the form of constructionillustrated is arranged to receive a wooden beam 15. By upward movementof the pressure piston 12 the apparatus may be clamped fast against theroof of the drift or tunnel through the beam 15. Moreover a movable prop16 is provided which receives or diverts the back pressure duringdrilling. 7

On the shaft 9, there are rotatably mounted between 2,711,305; PatentedJune 21, 1 955:

the frame struts 7, 8 two sleeves 17, 18 on which are arranged means forsupporting and guiding the arms 19, 29 each carrying a drilling machine.A gear wheel 21 is secured to the one end of each of the sleeves 17, 18.Each gear wheel 21 meshes with a pinion 22 which is connected by theshaft 23 with a worm gear 24-. On the worm wheel 24 there acts the worm25 which is operated by a motor, not illustrated in the drawing, such asa compressed air motor, in one direction of rotation or the other. Theworm drive 24, 25 is made so as to be selfchecking.

The carrying arms 19, 20 are made of channel irons preferably I-shapedand are arranged so as to be longitudinally movable in guides 26 securedto a casing 26a connected to the one end of the sleeves 17, 13 each (seeFig. 2). Said guides 26 are formed by any suitable means, for instanceby two substantially U-shaped members secured parallel one another tothe casing 26a, one of each side of the arms 19 and 28 respectively.Longitudinal movement of the carrying arms 19, 24? is made by a motor 27arranged on the casing 26a and connected to a pinion 28 which mesheswith a gear wheel 29. The shaft 32 of said gear wheel 29 is connected toa worm 32a arranged inside the casing 26a, and said worm meshes with agear wheel 3% arranged inside the casing 26a (see Fig.

2) and engaging a rack 31 arranged on the underside of arms 19, 26 each.The driving system formed by the worm arranged on shaft 32, the Wheel 30and the rack 31 is made self-checking. By means of this drive thecarrying arms 19 and 29 can be moved in any desired position, forexample between the one end position of the carrying arm 19 shown inFig. l and the other end position of the carrying arm 19 indicated indotted lines 33.

in Figures 5 and 6 there is indicated at 33 a bearing pin which issecured in any convenient way, for example by welding, to the ends ofthe beams 34 and 35, respectively. Said bearing pin 38 beingsubstantially cylindrical, has recesses 28a arranged on opposite sidesof the pin in such a manner that a plate 51 may be arranged displaceablybut not rotatably by means of members 41a engaging said recesses 38:;and corresponding recesses (not shown) in the plate 41. On the pin 33there is rotatably mounted by means of its central hub-like part 39 thehousing iii. Between the plate 41 and the housing iii there is arrangeda friction lining 42 and likewise between a loose plate 43 and the plate41 the brake lining 44. The plate 43 is connected with the housing 4% byscrew bolts 45 on each one of which there is arranged a spring 46 sothat in accordance with the adjustment of the nuts 47 the springs 46press the plates 43 and 41 with a greater or lesser force against thehousing 40 by means of the friction linings 42, 44. As the plate 41 ismounted non-rotatably on the pin 38 the rotary movement of the housing4% on the pin 38 is 1016 or less strongly checked by the arrangementillustrated.

As can be seen from Figure 6, the housing 40 is substantially U-shaped.between its free shoulders there are swingably arranged about the linkbolts 48, 49, two members 55, 55a, secured to a plate element 50 havingdepending integral members or tracks 51 which carry the frame 52 of thedrilling tool.

The rotary movement of the element 50 is braked by the action of thespring 53 which presses the sector shaped plate 56 and the part 55 ofthe element 50 by means of the friction lining 56 against the lowerflange 57 of the housing 41 On top, at the other side the element 50 isguided through the bolt 58 which extends through a curved slot 59 of theelement 4% whilst the slot 61 is provided for the screw 6% in the otherside of the element 40, holding the spring 53.

The swinging movement of the element 59 about the bolts 48 and i9 isthus checked by means of the device 54, 55, 56, 5'7 in a similar mannerto the swinging movement of the housing iii about the pin 33.

As a drilling tool there is provided in the apparatus illustrated adrilling machine with a rotary drill. The drilling tool has a frame 52which is carried in the swinging head 36 in the manner described withreference to Fig. 6. The frame 52 is longitudinally movable in its guide51 by means of a screw spindle 62 which is arranged within the frame 52.Said spindle 62 engages a nut 62a fixed to the element St). The spindle62 is at its end near the handle 63 supported rotatably, but notslidably by the frame 52 and can be actuated in order to move the frame52 longitudinally or by the hand crank 63. This longitudinal movement ofthe frame 52 relative to element 56 is used if the drilling tool is tobe adjusted without changing the position of the whole drilling device.

The drill driving motor 64 is movable on the frame 52 of the drillingtool by means of a slide 65. The moving of the driving motor 64 iseffected by means of a threaded spindle 66, actuated through the gearwheels 67 from the motor 68 which is arranged on the end of the frame 52directed towards the end of the shaft. As can be seen from Fig. 3 thereis an advantageous equalisation of the weight of the two lever arms,given by the position of the pivot point of the frame 52 on the swinginghead 36, by means of this opposed arrangement of the drill driving motor64 and the advancing motor 68. The drill spindle 69 is mounted betweenrollers 70 (Fig. 4) and carries at the front end a drill 72 providedpreferably with hard metal cutting edges.

In the employment of the apparatus for drilling work the apparatus isfirst of all clamped in the drift or tunnel by means of the pressurepiston. Then the carrying arms, which can preferably pivot by more thanon the axle 9, are brought into the required position for the productionof the drill hole and the drilling tool is correspondingly inwardlypivoted. The advancing motor 68 of the drill tool is then started up anddraws the'drill spindle against the end 71 of the shaft (Fig. 3). Theadvancing spindle 66 can be made hollow in order to save weight, as itis stressed substantially in tension only.

The drill is held with the desired pressure against the end of the shaftand the base of the drill hole by means of the advancing motor 68.Accordingly the driving motor is gradually moved against the end of theshaft, as indicated at 64a on the left side of Fig. 3. As soon as thedrill hole has reached the desired depth the direction of rotation ofthe advancing motor 68 is reversed and the drill is returned into theinitial position (right half of Fig. 3). The carrying arms and the beamsare then adjusted and the succeeding drill holes made.

It can be seen from Fig. 3 that the drilling apparatus is preferablyoperated approximately in the middle of the drift or the tunnel, but itis however also possible to arrange the apparatus according to theinvention on one side, as the carrying arms and the beams permitpractically any desired position of the drilling tool.

By arranging the drilling tool obliquely or swinging it about itsbearing on the swinging head, it is also possible to make obliquelyextending drill holes for so-called conical cutting. On the other handthe apparatus can also be applied to the production of parallelextending drill holes, which are employed in the so-called Brennercuttings.

The drifts or the tunnels are preferably provided with double tracks,the central rails of the two tracks being so spaced from each other thata third track is formed on to which the drilling apparatus according tothe invention can readily be brought by means of a turn-table asnormally used.

The capacity of the drilling apparatus according to the invention isvery great. It is for example possible to drill a cross working withabout 40 to 50 holes in one and ahalf hours. With the drilling deviceaccording to the invention it is possible to use high pressures on thedrill so that, even in hard slate, drillings of about 2 metres in depthcan be made in about one minute, Whilst in medium-hard sandstone thesame depth of drilling can be achieved in one and a half minutes.

I claim:

1. A drilling apparatus of the class described including a portableframe, a supporting shaft mounted on the frame and extending lengthwisethereof, spaced bearing longitudinally movable thereon, a drilling toolconnected to said beam, and means for moving the drilling tool so thatit may operate at different angular positions relative to saidsupporting shaft.

2. A drilling apparatus as called for in claim 1" in which self-checkingmeans are operatively connected to said beam for actuating the same.

3. A drilling apparatus as called for in claim 1 in which said travelingbeam extends transversely of said carrying arm, and means are providedfor slidably connecting said arm to said traveling frame.

4. A drilling apparatus of the class described including a portableframe, a supporting shaft mounted on the frame and extending lengthwisethereof, spaced bearing members axially mounted on said shaft, each ofsaid bearing members having a laterally and outwardly ex tending guide,carrying arms slidably mounted in the guides, a vertically disposedguide frame, means movably connecting each of said arms to said frame, adrill rod, a drive motor operatively connected to said drill rod, meansslidably connecting said motor to said frame, an advancing motor, and arotary spindle connected to said drive motor for moving the drill rod.

5. A drilling apparatus as called for in claim 4 in which the drivemotor and the advancing motor are positioned on opposite ends of theframe so that the spindle is subjected only to tensile stress when theapparatus is in operation.

6. A drilling apparatus as called for in claim 4 in i which. said motorsare disposed on opposite ends of the frame, and the advancing motorincludes a gear mechanism operatively connected to said spindle.

7. A drilling apparatus of the class described including a portableframe, a supporting shaft mounted on the frame and" extending lengthwisethereof, spaced bearing members axially mounted on said shaft, eachofsaid bearing members having a laterally and outwardly ex tendingguide/carrying arms slidably, mounted in the guides, each of said armshaving a movable beam associated therewith, a housing rotatablyconnected to said beam, a guiding casing pivotally connected to saidhousing, a vertical supporting frame, means slidably connecting saidcasing to said frame,-means for longitudinally moving the casingrelative to the frame, a drilling rod, a driving motor operativelyconnected to said drill rod, means slidably connecting said drive motorto said frame, an advancing motor, arotary spindle operatively connectedto said advancing motor, means connecting," said spindle to said drivemotor for axially displacing the drill rod, said motors being positionedon opposite sides of said frame for balancing-the latter during theoperation of the apparatus.

8 A drilling apparatus as called for in claim 7 in which means areprovided for braking the pivotal move-,

ment of the casingrelative to the housing.

References Cited in the fileof this patent UNITED STATES PATENTS.

1,180,634 Bravi Apr. 25,1916 1,978,368 Levin Oct. 23, 1934 2,162,552 7Hirschberg .'June 13, 1939 2,415,205 Gartin Feb. 4, 1947 2,480,661Manning Aug. 30,1949 2,500,932

Curtis et a1. Mar. 21,

